Contact for electrical glow-lamps.



Patentd Apr. l5, I902.

A. LEFEBRE. CONTACT FUR ELECTRICAL GLOW LAMPS.

(Application filed Nov. 11. 1901.)

(No Model.)

@iwy

U lTED STATES PATENT OFFICE."

ARMAND LEEEBRE, or PARIS, FRANCE, ASSIGNOR TO ELECTRIC LIGHTING BOARDS, LIMITED, on LoNpoN, ENGLAND.

CONTACT FOR ELECTRICAL GLOW-LAMPS;

srncrrrcarron forming part of Letters Patent-No. 697,856, dated April 15, ieoe.

Application filed November 11, 1901. Serial No. 81,914. (No model.)

To all whom it may concern:

Be itknown that I, ARMA I) Lnrnenna citizen of France, residing at No. 19 Rue Andre del Sarti, Paris, in the Republic of France,

have invented a certain new and useful Im-- proved Contact for Electrical Glow-Lamps, (for which application'for a patent has been made in Great Britain, dated Septemberlii, 1901, No. 18,732, and in France, application filed September 7, 1901,) of which the following is a specification.

This invention relates to means of attaching an electrical glow-lamp to a pair of conducting bands or sheets in such a way as to make electric contacts, putting the lamp in circuit by-the mere act of attachment at any part of the strip or sheet, as will be described with reference to the accompanying drawlugs.

Figure 1 is a perspective view showing part of a glow-lamp having its head arranged ac cording to this invention and attached to a pair of strips or webs of woven wires. Fig. 2 is a part section showing a modification.

The metal sheath a, forming the lamphead, is, as usual, filled with insulating material b, one of the leading-in wires 0 being connected to the sheath a, while the other leading-in wire (I is connected to a T-headed screw 2, the head of which is embedded in the insulating material I). The shank of the screw between the thread f and the head is covered with insulating material y. Two strip it k, of woven wire, are supported in any convenient way parallel to and insulated from one another. One of the strips is connected to the one terminal of a source of electricity. The other is connected to the other terminal. The lamp is attached by passing the screw through the upper strip and screwing into some mesh of the other strip until the edge of the sheath (6 is pressed against the upper strip. An electric current can then pass from the one strip 71. through the screw c to the one leading-in wired, through the filament to the other leading-in wire a, thence to the sheath u and the other strip is. When it is desiled to cover the upper strip by a fabric Z of any kind, ornamental or otherwise, a

metal ring on is fitted on the sheath ayso that it can rotate thereon, this ring having several spikes n projecting from it. In attaching the lamp, which has to be rotated so as to turn being placed at any part of their length, the wire fabrics may be wide webs or sheets, so

that lamps may be attached at any points over their area. Instead of woven wire, strips or sheets of easily-penetrable metal may obviously be employed.

Having thus described the nature of this invention and the best means I know of car rying the same into practical efiect, Iclaim- 1. An electrical lamp having a sheath, insulating material inclosed by said sheath, a conducting member having a head embedded in said insulating material, and projecting from the sheath, leading-in wires connected respectively with the sheath "and conducting member, in combination with a pair of separate conductors penetrable by said conducting member'and one of them being adapted for electrical connection with the sheath.

2. The combination of a pair of separate foraminous conductors, and .an electrical lamp, said lamp having a projecting conducting member adapted to extend through the openings in said conductors, and a sheath, the sheath and conducting member being insulated from each other, and leading-in wires connected respectively with the sheath and conducting member.

The combination of a pair of foraminous conductors, one of which is covered with insulating material, an electric lamp havinga part in rotatable connection with the lamp conducting member being insulated from :o and electrically connected with the sheath each other.

thereof and having a, projection adapted to In testimony whereof I have hereunto set penetrate the said insulatingmaterial and the l my hand in presence of two subscribing witconduetor to which the same is attached. nesses.

4. The combination of separatewoven-wire ARMANI) REFEREE. condi'xctors and an electrical lamp having a Vfituesses: projectingmemberadaptod to extend through EDWARD P. MAQLEA Hm conductors and a sheath, the sheath and 1 ALFRED L. BAKER. 

